Add to.have.properties expectation method

[al6x]

We currently have the expect(obj).to.have.property('key', 'value') expectation method, it would be nice to have ability to check for multiple properties at once.

Something like expect(obj).to.have.properties({key1: 'value1', key2: 'value2}), what do You think?

[logicalparadox]

You should check out #72 for a discussion we had about this. Basically, there is too much ambiguity in implementing this is core: is this key:value matching or deep equality testing. Also, given that property is expected to change the topic the current assertion this would cause confusion in further chaining .

Your welcome to implement as a plugin. I suggest reading the docs about overwriteMethod on the guide here.

[al6x]

Duplicate of #72, closing.